No, a college interview is not required prior to receiving a placement offer. However, some universities may require an in-person or virtual interview as part of the application process. For most schools, this is the norm.
In this case, it would be necessary for students to complete their interviews before they can receive their offers of admission and/or financial aid packages.
Additionally, many colleges have optional on-campus or off-campus interviewing programs that allow potential students to meet with admissions officers and faculty members face-to-face.
These meetings are often seen as beneficial by both parties since they provide additional insight into each other's backgrounds and goals.
If such an opportunity arises at your prospective university then attending the meeting could potentially strengthen your chance of acceptance if you perform well during the conversation(s).
Ultimately though, whether or not you attend any formalized interviews should come down to personal preference since there will likely still be plenty of alternative ways for institutions to gauge how suitable applicants are without conducting individual conversations beforehand.